<template>
<el-container class="home-container">
    <!-- 头部区域 -->
  <el-header>
      <div class="tou_fu">
          <div class="tou_box">
              <img src="../assets/touxiang.jpg" alt="">
          </div>
          
          <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <!--  页面主体区域-->
    <el-container>
        <!-- 侧边栏 -->
        <el-aside width="isCollapse ? '64px':'200px'">
            <div class="toggle-button" @click="toggleCollapse">|||</div>
            <!-- 侧边栏菜单区域 -->
             <el-menu background-color="#333744" text-color="#fff" active-text-color="#409bff"
              unique-opened :collapse="isCollapse" :collapse-transition='false' router 
              :default-active = "activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
          <!-- 一级菜单模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subItem.path + ''" v-for="subItem in item.children" :key="subItem.id"
        @click="saveNavState('/'+subItem.path)">
             <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
            </template> 
        </el-menu-item>
      </el-submenu>
     
    </el-menu>
        </el-aside>
        <!-- 右侧内容 -->
        <el-main>
            <!-- 路由占位符 -->
            <router-view></router-view>
        </el-main>
    </el-container>
</el-container>

</template>
<script>
export default {
    data(){
        return{
            //左侧菜单数据
            menulist:[],
            iconsObj:{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            //是否折叠
            isCollapse:false,
            //被激活的链接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear();
            this.$router.push('/login');
        },
        //获取所有菜单
        async getMenuList(){
          const {data: res} = await this.$http.get('menus')
          if(res.meta.status !==200) return this.$message.error(res.meta.msg)
          this.menulist = res.data
          console.log(res)
        },
        //点击按钮，切换菜单的折叠与展开
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        //保存链接激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath = activePath
        }
    }
}
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right:none ;
    }
}
.el-main{
    background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
.tou_fu{
   
.tou_box{
    height: 55px;
    width: 55px;
    border:1px solid #eee;
    border-radius: 50%;
    padding:1.5px;
    box-shadow:0 0 10px #ddd;
    background-color: #fff;
    img{
        height: 100%;
        width: 100%;
        border-radius: 50%;
        
    }
}
}

</style>